WO2017135478A1

WO2017135478A1 - Working apparatus for construction machine

Info

Publication number: WO2017135478A1
Application number: PCT/KR2016/001147
Authority: WO
Inventors: 김우현; 최영진
Original assignee: 볼보 컨스트럭션 이큅먼트 에이비; 김우현
Priority date: 2016-02-02
Filing date: 2016-02-02
Publication date: 2017-08-10

Abstract

Disclosed is a working apparatus for a construction machine, wherein a link is connected to frame lugs by means of a fixing pin so as to be rotatable, the frame lugs being formed on the outside of a bucket to face each other. The present invention provides a working apparatus for a construction machine, the working apparatus comprising: frame lugs formed on the outside of a bucket to face each other; a boss secured to the outside of one of the frame lugs and having a protrusion protruding from the inner circumferential surface thereof, the protrusion having a coupling hole formed therethrough; a fixing pin for rotatably connecting a link of the working apparatus to the frame lugs, the fixing pin having a helical guide formed to be symmetric with respect to a coupling hole formed through one end of the fixing pin, wherein, when the fixing pin is coupled to and pressed against the boss, the fixing pin is rotated by a predetermined angle by means of the helical guide making contact with the protrusion, and thus the coupling hole of the boss is aligned with the coupling hole of the fixing pin; and a fastening member fastened to the coupling hole of the boss and the coupling hole of the fixing pin to prevent the fixing pin from being separated from the frame lugs.

Description

Construction machinery work equipment

The present invention relates to a work device, and more specifically, to a construction machine working device for rotatably connecting the link (link) by the fixing pin to the frame lug (frame lug) formed to face the outer surface of the bucket It is about.

Work equipment for construction machinery according to the prior art shown in Figure 1 and 2,

The link of the work device (referring to a link rotatably connected to one end of the arm) 4 is fixed to the

frame lugs

2 and 3 formed to face the outer surface of the bucket 1 of the excavator. 5) is rotatably connected.

Coupling hole 7 and fixing pin 5 of boss 6 coupled to one end of fixing pin 5 to prevent the fixing pin 5 from being separated from the

frame lugs

2 and 3. The bolt (9) is coupled to the coupling hole (8) formed through one end of the fastening.

At this time, when the bolt 9 is coupled to the

coupling holes

7 and 8 of the fixing pin 5 and the boss 6, the operation of matching the center of the

coupling holes

7 and 8 is not easy.

As a result, a separate auxiliary hole 10 is formed through the outer side of the coupling hole 8 formed in the fixing pin 5, and a bar or the like is fixed to the auxiliary hole 10. The pin 5 is rotated clockwise or counterclockwise little by little to coincide with the centers of the

coupling pins

7 and 8 of the fixing pin 5 and the boss 6.

The work device according to the related art configured as described above, when the bolt 9 is coupled to the

coupling holes

7 and 8 of the fixing pin 5 and the boss 6, the

coupling holes

7 and 8. Matching the center of the work is hard workability is poor.

In addition, in order to fasten the bolts 9 to the

coupling holes

7 and 8 of the fixing pin 5 and the boss 6, an auxiliary hole 10 must be separately formed at one end of the fixing pin 5. There is a problem that the fixing pin (5) to rotate by inserting a bar or the like into the auxiliary hole (10).

Therefore, the present invention is to solve the above problems, when connecting the link to the frame lug formed on the outer surface of the bucket by a fixing pin and fastened by a bolt so that the fixing pin is not separated, the center of the coupling hole that the bolt is coupled It is an object of the present invention to provide a working device for construction machinery that can improve the workability by not forming a separate auxiliary hole in the fixing pin is unnecessary to match the need.

According to one embodiment of the present invention to achieve the above and other objects of the present invention,

A frame lug formed opposite the outer surface of the bucket;

A boss fixed to an outer surface of one frame lug of the frame lugs, and having a protrusion protruding from an inner circumference thereof and having a coupling hole passing through the protrusion;

A fixing pin rotatably connecting a link of a work device to the frame lug and having a helical guide symmetrically formed around a coupling hole formed at one end thereof, and connecting the fixing pin to the boss to contact the protrusion when pressed The fixing pin is rotated by an arbitrary angle by the spiral guide which is coincided with the center of the coupling hole of the boss and the coupling hole of the fixing pin;

And a fastening member fastened to the coupling hole of the boss and the coupling hole of the fixing pin to prevent the fixing pin from being separated from the frame lug.

According to another embodiment of the present invention to achieve the above and other objects of the present invention,

A frame lug formed opposite the outer surface of the bucket;

A boss fixed to an outer surface of one frame lug of the frame lugs and having a helical guide symmetrically formed at an inner circumference of a coupling hole formed therethrough;

A fixing pin rotatably connecting a link of a work device to the frame lug, and a protrusion formed at an outer circumference of the both ends of a coupling hole formed at one end thereof; The fixing pin is rotated by an arbitrary angle by the protrusion which is brought into contact and slips to coincide with the center of the coupling hole of the boss and the coupling hole of the fixing pin;

According to the present invention having the above-described configuration, when the link is rotatably connected to the frame lug formed opposite to the bucket outer surface by the fixing pin and fastened by the bolt so that the fixing pin is not separated, the coupling hole of the bolt is coupled. Since there is no need for a separate work process that matches the center, there is an effect of improving workability of assembling.

1 is a schematic view of a working machine for construction machinery according to the prior art,

2 is a state diagram using the connection device shown in FIG.

3 is a schematic view of a connecting device for connecting an arm of a link to a bucket in a construction machine working device according to a preferred embodiment of the present invention;

4 (a, b, c) is a view showing that the fixing pin is assembled by the connecting device shown in FIG.

5 is a state diagram using the connection device shown in FIG.

Figure 6 is a schematic diagram of a connecting device for connecting the arm of the link to the bucket in the construction machine working apparatus according to another embodiment of the present invention,

7 (a, b, c) is a view showing that the fixing pin is assembled by the connecting device shown in FIG.

11; bucket

12,13; Frame lug

14; Protrusion

15; Joining hole

16; Boss

17; link

18; Push pin

19; Joining hole

20; Helical shaped guide

21; Fastening member

22; Seating part

23; Jam

Hereinafter, with reference to the accompanying drawings will be described in detail a working device for a construction machine according to a preferred embodiment of the present invention.

Figure 3 is a schematic diagram of a connecting device for connecting the arm of the link to the bucket in the construction machine working apparatus according to a preferred embodiment of the present invention, Figure 4 (a, b, c) is the connecting device shown in FIG. 5 is a view showing that the fixing pin is assembled by, Figure 5 is a state diagram used in the connection device shown in FIG.

3 to 5, the working device for a construction machine according to an embodiment of the present invention,

Frame lugs

12, 13 are formed on the outer side of the excavator's working device (referring to bucket 11 as an example) to face each other by welding.

The

frame lugs

12 and 13 are formed with bosses 16 protruding from the inner circumference of the protrusions 14, the bosses 16 penetrating radially through the coupling holes 15 passing through the protrusions 14. It is fixed to the outer side of one side frame lug 13 by welding.

A fixing pin 18 for rotatably connecting the link 17 of the work device to the

frame lugs

12 and 13 is coupled through the

frame lugs

12 and 13 and the boss 16.

A helical shaped guide 20 is formed symmetrically about a coupling hole 19 formed through one end of the fixing pin 18, and the fixing pin 18 is coupled to the boss 16. When pushed in the direction, the spiral guide 20 rotates the fixing pin 18 by an arbitrary angle due to slip when the spiral guide 20 comes into contact with the end portion 14 of the boss 16 so that the coupling hole of the boss 16 can be rotated. 15 and the center of the coupling hole 19 of the fixing pin 18 to match.

In order to prevent the fixing pin 18 from being detached from the

frame lugs

12 and 13, a fastening member 21 (for example, a bolt and a nut) is formed on the boss 16 and the fixing pin 18. It is coupled to the coupling holes (15, 19) and fastened.

When the fixing pin 18 is coupled to the boss 16 and rotates by an arbitrary angle, the coupling hole 19 of the fixing pin 18 and the coupling hole 15 of the boss 16 coincide with each other. A flat mounting portion 22 is formed on the outer circumference of the fixing pin 18 in contact with both ends of the coupling hole 19 formed to penetrate the fixing pin 18 so that the protrusion 14 of the 16 is seated. Can be.

When the coupling hole 19 of the fixing pin 18 and the coupling hole 15 of the boss 16 coincide due to the rotation of the fixing pin 18 with respect to the boss 16, the fixing pin 18 The locking jaw 23 for preventing the rotation of the rod may be formed at one side of the seating part 22 of the fixing pin 18.

According to the above configuration, the link 17 of the working device can be pivotally connected to the

frame lugs

12 and 13 formed on the outer surface of the bucket 11 of the excavator by the fixing pin 18.

That is, after the link 17 is positioned between the

frame lugs

12 and 13, the fixing pin 18 is connected to the frame lug 12, the link 17, the frame lug 13, and the boss 16. Pass it through and combine. At this time, the fastening member 21 coupled to the

coupling holes

15 and 19 formed in the boss 16 and the fixing pin 18 is fastened by a nut.

The process of matching the centers of the coupling holes 15 and 19 formed through the boss 16 and the fixing pin 18 so as to couple the fastening member 21 will be described in detail with reference to FIG. 4.

As shown in Figure 4 (a), as the initial state that the fixing pin 18 is coupled to the inside of the boss 16 by an arbitrary depth, the spiral guide 20 formed on the fixing pin 18 is the boss ( 16 is in contact with one end of the protruding portion 14 protruding from the inner circumference of the 16.

As shown in FIG. 4 (b), when the fixing pin 18 is pushed a little further into the boss 16 (one end of the fixing pin 18 is moved to a position coinciding with the outer surface of the boss 16). Slip is generated by the spiral guide 20 formed on the fixing pin 18.

Due to this, the fixing pin 18 is moved forward in the direction of the arrow while moving forward to the boss 16 side.

As shown in (c) of FIG. 4, when the fixing pin 18 is pushed a little further into the boss 16 (one end of the fixing pin 18 is moved to a position that partially protrudes from the outer surface of the boss 16). ) The forward movement and rotation of the fixing pin 18 by the spiral guide 20 of the fixing pin 18 is stopped.

At this time, the protrusion 14 protruding from the inner circumference of the boss 16 is seated on the seating portion 22 formed in a plane on the outer circumference of the fixing pin 18 so as to penetrate the fixing pin 18. The centers of the coupling holes 19 and the coupling holes 15 formed in the boss 16 coincide with each other.

At this time, the locking jaw 23 formed on one side of the seating portion 22 is in close contact with the outer surface of the protrusion 14 so that the rotation is stopped, the fixing pin 18 is no longer able to move forward.

Therefore, when the fixing pin 18 is coupled to the boss 16 positioned on the outer surface of the frame lug 13, the coupling hole 15 and the fixing pin 18 of the boss 16 whose centers coincide with each other. After coupling the fastening member 21 to the coupling hole 19 of the can be fastened by a nut.

As described above, when the link 17 of the work device is rotatably connected to the frame lugs 12 and 13 of the bucket 11 by the fixing pin 18, the fixing pins from the frame lugs 12 and 13 are rotated. The fastening member 21 is coupled to the boss 16 to which the fixing pin 18 is coupled and the coupling holes 15 and 19 formed in the fixing pin 18 to prevent the 18 from being separated. At this time, in order to match the center of the coupling hole (15, 19) to form an auxiliary hole in one end of the fixing pin 18, or the work process of rotating the fixing pin 18 in the clockwise or counterclockwise direction is unnecessary Can improve the sex.

Figure 6 is a modified example of a connecting device for connecting the arm of the link to the bucket in the construction machine working apparatus according to another embodiment of the present invention, Figure 7 is assembled with a fixing pin by the connecting device shown in FIG. It is a drawing showing.

6 and 7 (a, b, c), the construction machine working apparatus according to another embodiment of the present invention,

Frame lugs 12, 13 are formed on the outer side of the excavator's working device (referring to bucket 11 as an example) to face each other by welding.

A boss 16 having a helical shaped guide 20 symmetrically formed on the inner circumference of the coupling hole 15 formed therethrough is one frame lug 13 of the frame lugs 12 and 13. Is fixed to the outer surface of the shell by welding.

A fixing pin 18 for rotatably connecting the link 17 of the work device to the frame lugs 12 and 13 is coupled through the frame lugs 12 and 13 and the boss 16.

Fixing pins connected to the frame lugs 12 and 13 so as to be rotatable by fixing pins 18, and fixed pins contacting both ends of the coupling hole 19 formed through one end of the fixing pins 18. The protrusion part 14 is formed in the outer periphery of 18). As a result, the fixing pin 18 is rotated by an arbitrary angle by the protrusion 14 which is coupled to the fixing pin 18 by the boss 16 and the end of the spiral guide 20 is slipped when pressed. Thus, the center of the coupling hole 15 of the boss 16 and the coupling hole 19 of the fixing pin 18.

A fastening member 21 (consisting of a bolt and a nut) of the coupling lug 15 and the fixing pin of the boss 16 is provided to prevent the fixing pin 18 from being separated from the frame lugs 12 and 13. It is coupled to the coupling hole 19 of 18).

6 and 7, the working device for a construction machine according to another embodiment of the present invention, the spiral guide 20 is formed symmetrically on the inner circumference of the boss 16, the fixing pin 18 Except that the protrusion 14 is formed on the outer periphery of the end, the configuration is the same as the configuration of the construction machine working apparatus according to an embodiment of the present invention shown in FIG. The same reference numerals refer to the same.

The process of matching the centers of the coupling holes 15 and 19 formed through the boss 16 and the fixing pin 18 so as to couple the fastening member 21 will be described with reference to FIGS. It demonstrates in detail.

As shown in FIG. 7 (a), the fixing pin 18 is coupled to the boss 16 by an arbitrary depth, and the fixing pin is formed on the spiral guide 20 formed on the inner circumference of the boss 16. One end of the protruding portion 14 protruding at an interval of 180 degrees is in contact with 18.

As shown in FIG. 7B, when the fixing pin 18 is pushed further into the boss 16, slip is generated by the spiral guide 20 formed at the inner circumference of the boss 16.

As a result, the fixing pin 18 is advanced toward the boss 16 and simultaneously rotated in the direction of the arrow.

As shown in FIG. 7C, when the fixing pin 18 is pushed a little further into the boss 16 (one end of the fixing pin 18 is moved to a position where a part of the boss 16 protrudes from the outer surface of the boss 16). ), The forward movement and rotation of the fixing pin 18 by the spiral guide 20 of the boss 16 is stopped.

At this time, since the protrusion 14 formed on the fixing pin 18 is mounted to the spiral guide 20 formed at the inner circumference of the boss 16, the coupling hole 19 and the boss formed through the fixing pin 18 are mounted therethrough. The centers of the coupling holes 15 formed through the 16 are coincident with each other.

Herein, while the present invention has been described with reference to the preferred embodiments, those skilled in the art will variously modify the present invention without departing from the spirit and scope of the invention as set forth in the claims below. And will be able to change.

According to the present invention having the above-described configuration, it is possible to improve the workability to connect the link to the frame lug formed opposite to the bucket outer surface of the excavator by the fixing pin and to fasten by bolt so that the fixing pin is not separated It has an effect.

Claims

A frame lug formed opposite the outer surface of the bucket;

A boss fixed to an outer surface of one frame lug of the frame lugs, and having a protrusion protruding from an inner circumference thereof and having a coupling hole passing through the protrusion;

A fixing pin rotatably connecting a link of a work device to the frame lug, a helical guide symmetrically formed around a coupling hole formed at one end thereof, and engaging the fixing pin with the boss to contact the protrusion when pressed The fixing pin is rotated by an arbitrary angle by the spiral guide which is coincided with the center of the coupling hole of the boss and the coupling hole of the fixing pin;

And a fastening member fastened to the coupling hole of the boss and the coupling hole of the fixing pin to prevent the fixing pin from being separated from the frame lug.
The method of claim 1,

The boss is formed on the outer periphery of the fixing pin in contact with both ends of the coupling hole of the fixing pin, the fixing pin is coupled to the boss and when the coupling hole of the fixing pin and the coupling hole of the boss coincide due to rotation by an arbitrary angle, the boss Work device for a construction machine comprising a; a seating portion is seated projections.
The method of claim 2,

And a locking jaw formed at one side of the seating part of the fixing pin and preventing the fixing pin from rotating further when the coupling hole of the fixing pin and the coupling hole of the boss coincide with each other. Machinery work tools.
A frame lug formed opposite the outer surface of the bucket;

A boss fixed to an outer surface of one frame lug of the frame lugs and having a helical guide symmetrically formed at an inner circumference of a coupling hole formed therethrough;

A fixing pin rotatably connecting the link of the work device to the frame lug, and a protrusion formed at an outer circumference of the both ends of the coupling hole formed at one end thereof, and coupling the fixing pin to the boss to the spiral guide when pressed. The fixing pin is rotated by an arbitrary angle by the protrusion which is brought into contact and slips to coincide with the center of the coupling hole of the boss and the coupling hole of the fixing pin;

And a fastening member fastened to the coupling hole of the boss and the coupling hole of the fixing pin to prevent the fixing pin from being separated from the frame lug.